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Journal articles on the topic 'Linear motor'

Author: Grafiati

Published: 4 June 2021

Last updated: 31 May 2022

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1

Chen, Xinwen, Hanying Jiang, Zhaohua Li, and Kun Liang. "Modelling and Measurement of a Moving Magnet Linear Motor for Linear Compressor." Energies 13, no. 15 (August 4, 2020): 4030. http://dx.doi.org/10.3390/en13154030.

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For the purpose of efficiency improvement, a linear motor that performs a linear reciprocating motion can be employed to directly drive the piston in a reciprocating refrigeration compressor without crankshaft mechanism. This also facilitates the modulation of cooling capacity as the stroke and frequency can be readily varied in response to heat load. A novel design of moving magnet linear motor for linear compressor was analyzed in the paper. A finite element analysis (FEA) model was built to simulate the characteristics of the linear motor. Current and displacement signals were measured from a test rig and were defined in the transient FEA model. Transient motor force was simulated with the FEA model and good agreements are shown between the results from the FEA model and interpolated shaft force from static force measurements. Major Losses, such as copper loss and core loss were also computed. Motor efficiency decreased from 0.88 to 0.83 as stroke increased from 9 mm to 12 mm, while the pressure ratio remained unchanged. Comparisons were made between the present moving magnet linear motor and moving coil linear motors. Generally, the moving magnet linear motor demonstrates higher efficiency than moving coil motors, which have significantly higher copper loss. The present moving magnet design with simple structure could be further optimized to improve motor efficiency.

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2

Bakewell, David J. G., and Dan V. Nicolau. "Protein Linear Molecular Motor-Powered Nanodevices." Australian Journal of Chemistry 60, no. 5 (2007): 314. http://dx.doi.org/10.1071/ch06456.

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Myosin–actin and kinesin–microtubule linear protein motor systems and their application in hybrid nanodevices are reviewed. Research during the past several decades has provided a wealth of understanding about the fundamentals of protein motors that continues to be pursued. It has also laid the foundations for a new branch of investigation that considers the application of these motors as key functional elements in laboratory-on-a-chip and other micro/nanodevices. Current models of myosin and kinesin motors are introduced and the effects of motility assay parameters, including temperature, toxicity, and in particular, surface effects on motor protein operation, are discussed. These parameters set the boundaries for gliding and bead motility assays. The review describes recent developments in assay motility confinement and unidirectional control, using micro- and nano-fabricated structures, surface patterning, microfluidic flow, electromagnetic fields, and self-assembled actin filament/microtubule tracks. Current protein motor assays are primitive devices, and the developments in governing control can lead to promising applications such as sensing, nano-mechanical drivers, and biocomputation.

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3

MIYATA, Shohiko, Akio MATSUURA, and Hajime TAKAGI. "Linear motor carMAGLEV." Doboku Gakkai Ronbunshu, no. 415 (1990): 17–25. http://dx.doi.org/10.2208/jscej.1990.415_17.

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4

Teter, Joseph P., and Arthur E. Clark. "Magnetostrictive linear motor." Journal of the Acoustical Society of America 92, no. 1 (July 1992): 631. http://dx.doi.org/10.1121/1.404062.

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5

Yamaguchi, Masaki. "Linear ultrasonic motor." Journal of the Acoustical Society of America 96, no. 1 (July 1994): 614. http://dx.doi.org/10.1121/1.410393.

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6

Onishi, Kazumasa, and Koichi Naito. "Ultrasonic linear motor." Journal of the Acoustical Society of America 97, no. 5 (May 1995): 3215. http://dx.doi.org/10.1121/1.411837.

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7

Otsuka, Jiro, Toshiharu Tanaka, and Ikuro Masuda. "Sub-Nanometer Positioning Combining New Linear Motor with Linear Motion Ball Guide Ways." International Journal of Automation Technology 3, no. 3 (May 5, 2009): 241–48. http://dx.doi.org/10.20965/ijat.2009.p0241.

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A new type of linear motor described in this paper has some advantages compared with the usual types of motors. The attractive magnetic force between the stator (permanent magnets) and mover (armature) is diminished almost to zero. The efficiency is better because the magnetic flux leakage is very small, the size of motor is smaller and detent (force ripple) is smaller than the general motors. Therefore, we think that this motor is greatly suitable for ultra-precision positioning as an actuator. An ultra-precision positioning device using this motor and liner motion ball guide ways is newly developed. Moreover, the positioning performance is evaluated by a positioning resolution, deviational and dispersion errors. As the results of repeated step response tests, the positioning resolution is 0.3 nm, the deviational error is -0.001nm and the dispersion error (3σ) is 0.29 nm. Consequently, the positioning device achieves sub-nanometer positioning. In addition, very large rigidity can be achieved.

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8

VELI, Yelda, Alexandru M. MOREGA, Lucian PÎSLARU – DĂNESCU, Mihaela MOREGA, and Marius POPA. "The Study of a Linear Magnetostriction Motor." "ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS)" 1, no. 1 (November 19, 2020): 1–8. http://dx.doi.org/10.36801/apme.2019.1.12.

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9

Leisten, J. M., D. R. G. H. Jones, and L. Hobson. "Laboratory Exercise on Linear Induction Motors." International Journal of Electrical Engineering & Education 24, no. 2 (April 1987): 101–13. http://dx.doi.org/10.1177/002072098702400202.

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The paper describes the results of an exercise on linear induction motors to demonstrate their principles in an undergraduate laboratory experiment. Basic linear motor characteristics are demonstrated and magnetic field strength measurements made. An equivalent circuit for the motor is derived from practical tests and results processed by a computer to predict motor efficiency and rotor thrust for various values of slip.

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10

Ahmadinia, Nahid. "The Linear Induction Motor (LIM) & Single Linear Induction Motor (SLIM)." American Journal of Electrical Power and Energy Systems 3, no. 4 (2014): 71. http://dx.doi.org/10.11648/j.epes.20140304.11.

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11

Rahayu, Sofitri, and Yogi Baskoro. "Efisiensi Motor Sinkron Linier dengan Magnet Permanen Sebagai Penggerak KRL Terbaru." Energi & Kelistrikan 11, no. 2 (October 16, 2019): 66–70. http://dx.doi.org/10.33322/energi.v11i2.489.

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The latest electric train at this time has begun to be widely used linear synchronous motors with permanent magnets as driving locomotives. This permanent magnet has the same function as a conventional synchronous motor which is to produce a magnetic field so that the motor can move linearly. This linear synchronous motor does not have a gear (gear) and axis, but the mechanical motion of this linear motor is synchronous with the magnetic field running. This running magnetic field is produced by the entanglement of the three phases and the arrangement of magnetic poles U, S, U, S. Because the motor is linear synchronous is a high-speed motor, the mechanical speed is the same as the speed of the magnetic field running. So that this motor is capable of producing large thrust compared to the use of conventional motors (DC motors and induction motors) to drive electric rail trains. If the conventional synchronous motor uses a frequency of 50 Hz, then the linear high-speed synchronous motor uses a frequency of 5-50 Hz in changing its speed and this research the efficiency, electromagnetic power (thrust) and thrust force of a synchronous motor will be analyzed. linear according to the frequency selection from 5-50 Hz, to drive the electric train locomotive.

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12

Suzuki, Tamotsu. "DD-type Linear Motor Systems and Their Applications." Journal of Robotics and Mechatronics 1, no. 4 (December 20, 1989): 328–32. http://dx.doi.org/10.20965/jrm.1989.p0328.

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Carrying and positioning systems for linear movement in factory automation are typically a combination of a motor and motion-translating mechanisms, such as ball screws, belts, and racks and pinions. Such mechanical motion-translating mechanisms, however, have the disadvantages of limited accuracy, speed, and durability. As a solution to this problem, direct-drive linear motors, which drive an object directly mounted on the drive section, have attracted considerable interest, and various types of linear motors have been actually used. The recent trend in linear motor development has been such that the functions of the motor alone have been expanded into higher functions of the linear drive system. The ""Megathrust Motor"" is a direct drive linear actuator system developed by Nippon Seiko K.K. It has some components, such as a detector and drive unit, which are different from those of other drive systems, and therefore provide high performance and added value. Nippon Seiko K.K. has also developed and marketed a direct drive ""Megatorque Motor."" This motor has achieved high speed and highly accurate rotational drive of industrial robots and general industrial machines, and has been widely used as a rotary actuator in factory automation. The Megathrust Motor is a linear drive system developed as an application of the technology of the Megatorque Motor. This paper describes the features, performance, and applications of the Megathrust Motor.

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13

Wang, Wei, and Yong Ming Xia. "Research on Linear Motor for Linear Compressor." Advanced Materials Research 383-390 (November 2011): 1350–55. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.1350.

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A novel moving-magnet linear motor was introduced which can produce high-frequency short stroke reciprocating motion, and it’s suitable to apply in linear compressor. The equivalent magnetic circuit model was established and the expression of driven force was given, then the impact the motor parameters made to motor performance was analyzed. The motor’s finite element model was established, the features of the air-gap magnetic field were studied, and the impact the length of the permanent magnet made to the motor stroke was analyzed. The foundation of the motor’s further optimization was laid by the results.

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14

Wang, Wei, and Yong Ming Xia. "Research on Linear Motor for Linear Compressor." Advanced Materials Research 433-440 (January 2012): 2635–40. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.2635.

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A novel moving-magnet linear motor was introduced which can produce high-frequency short stroke reciprocating motion, and it’s suitable to apply in linear compressor. The equivalent magnetic circuit model was established and the expression of driven force was given, then the impact the motor parameters made to motor performance was analyzed. The motor’s finite element model was established, the features of the air-gap magnetic field were studied, and the impact the length of the permanent magnet made to the motor stroke was analyzed. The foundation of the motor’s further optimization was laid by the results.

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15

Watson, D. B., and A. M. Watson. "Linear ball-bearing motor." IEE Proceedings - Science, Measurement and Technology 141, no. 3 (May 1, 1994): 224–28. http://dx.doi.org/10.1049/ip-smt:19949919.

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16

Teter, J. P., M. H. Sendaula, J. Vranish, and E. J. Crawford. "Magnetostrictive linear motor development." IEEE Transactions on Magnetics 34, no. 4 (July 1998): 2081–83. http://dx.doi.org/10.1109/20.706805.

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17

Newton, David, Ephrahim Garcia, and Garnett C. Horner. "A linear piezoelectric motor." Smart Materials and Structures 7, no. 3 (June 1, 1998): 295–304. http://dx.doi.org/10.1088/0964-1726/7/3/004.

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18

Yoon, Seok Jin. "Linear piezoelectric ultrasonic motor." Journal of the Acoustical Society of America 119, no. 6 (2006): 3518. http://dx.doi.org/10.1121/1.2212582.

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19

Syrkin, Ilya. "Linear Synchronous Motor Model." MATEC Web of Conferences 297 (2019): 02006. http://dx.doi.org/10.1051/matecconf/201929702006.

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Liner synchronous motor (LSM) is perspective motor for milling machines and other manufacturing equipment such as 3D printers, laser cutting and engraving machines, etc. Some different construction of LSM can be found. The LSM with permanent magnets is modeled in this paper. Comsol Multiphysics is used for finite element model of LSM. Motor stator is built using rear earth magnets N52, an anchor consists of 6 teeth with 3-phase winding. Large cogging force is the problem of LSM, so there is task to reduce this force. This task can be solved by motor geometry optimization. Geometric parameter of motor is represented by variables. It allowed using optimization methods for best geometry search. FEM model with two different mesh sizes is analysed in this paper. Each mesh allows find solution but calculation time and tolerance are different. During experiments, optimal size of tooth for maximal driving force is found. Cogging force is also reduced.

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20

Jin, Jiamei, and Chunsheng Zhao. "Linear stepping ultrasonic motor." Journal of Electroceramics 20, no. 3-4 (May 12, 2007): 193–96. http://dx.doi.org/10.1007/s10832-007-9133-3.

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21

Chekhova, Anastasia A., and Andrei V. Solomin. "Traction linear induction motor of urban MAGLEV transport." Transportation Systems and Technology 6, no. 1 (March 30, 2020): 120–28. http://dx.doi.org/10.17816/transsyst202061120-128.

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Background: Currently, great attention is paid to the problem of increasing the efficiency of transport in cities. The use of urban Maglev transport with linear traction motors will improve the transport infrastructure of megacities. Aim: The use of magnetic-levitation transport with linear induction motors (LIM) is proposed. It is proposed to use traction linear induction motors (LIM) for urban Maglev transport, increasing the safety of a new type of transport. Materials and Methods: In this work, the design of a linear traction induction motor was proposed, which can increase lateral stabilization forces and safety of traffic by performing the lateral parts of the secondary element of a linear induction motor in the form of short-circuited windings. Results: Improving efforts of the lateral stabilization improve crew safety.

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22

Chowdhury, Juan, Gaurav Kumar, Karuna Kalita, Kari Tammi, and Sashindra K. Kakoty. "A review on linear switched reluctance motor." Rakenteiden Mekaniikka 50, no. 3 (August 21, 2017): 261–70. http://dx.doi.org/10.23998/rm.65121.

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Switched reluctance motors have been extensively studied by researchers for their unparalleled advantages in wide range of applications. The linear versions of it, possessing similar attributes and prospects, have been developed in recent years. Owing to their frugal design, robust built and high force density, the linear switched reluctance motors (LSRM) has had significant stages of development and optimization. The flexibility in design and operation makes LSRM a prime contender for any linear motor-actuator application. This paper provides a bird’s eye view across its developmental stages and its various aspects in design, analysis and control. The following content discusses the salient points of research and the contribution by researchers in this field.

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23

Zhou, Feng, Han Zhao, Xiaoke Liu, and Fujia Wang. "A new method of phase-shifting and displacement of unit motor to suppress the thrust fluctuation of linear motor." Advances in Mechanical Engineering 13, no. 4 (April 2021): 168781402110087. http://dx.doi.org/10.1177/16878140211008740.

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Permanent magnet linear motors can cause thrust fluctuation due to cogging and end effects, which will affect the operation stability of the linear motor. In order to solve this problem, a new method of eliminating alveolar force by using phase-shifting and displacement is proposed in this paper. Taking the cylindrical permanent magnet linear motor as an example, the traditional cylindrical permanent magnet linear motor is divided into two unit-motors, and established finite element analysis model of cylindrical permanent magnet linear motor. It is different from other traditional methods, the thrust fluctuation was reduced by both phase-shifting and displacement simultaneously in this paper, and through simulation analysis, it is determined that the thrust fluctuation suppression effect was the best when the cogging distance was shifted by half. Furthermore, a comparative simulation was made on whether the magnetic insulating material was used. The simulation results show that: The method proposed in this paper can effectively suppress the thrust fluctuation of the cylindrical permanent magnet linear motor. And it can be applied to other similar motor designs. Compared with the traditional method of suppressing thrust fluctuation, the mechanical structure and the technological process of suppressing thrust fluctuation used in this method are simpler.

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24

Liu, Quan, Qiao Qiao Liu, Xiao Fei Wang, and Xue Zhao. "Application of Linear Servo Motor in Biochip Microarray Instrument." Applied Mechanics and Materials 321-324 (June 2013): 795–98. http://dx.doi.org/10.4028/www.scientific.net/amm.321-324.795.

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A novel design to biochip microarray instrument is use of linear motors, in preference to conventional rotary motors driving ball screw. Three ironless core linear servo motors direct drive the X, Y and Z-axis motion, Improve performance such as superior positioning accuracy, high-speed operation and increased efficiency. The whole configuration for new microarray printing instrument is designed. Furthermore, the structure of special linear motors is also designed detailedly. And the linear servo motor automation control technology is introduced in this paper.

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25

Ruiz-Díez, Víctor, Jorge Hernando-García, Javier Toledo, Abdallah Ababneh, Helmut Seidel, and José Luis Sánchez-Rojas. "Piezoelectric MEMS Linear Motor for Nanopositioning Applications." Actuators 10, no. 2 (February 18, 2021): 36. http://dx.doi.org/10.3390/act10020036.

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This paper reports the design, fabrication, and performance of piezoelectric bidirectional conveyors based on microelectromechanical systems (MEMS) and featuring 3D-printed legs in bridge resonators. The structures consisted of aluminum-nitride (AlN) piezoelectric film on top of millimeter-sized rectangular thin silicon bridges and two electrode patches. The position and size of the patches were analytically optimized for travelling or standing wave generation, while the addition of 3D-printed legs allowed for a controlled contact and amplified displacement, a further step into the manufacturing of efficient linear motors. Such hybrid devices have recently demonstrated the conveyance of sliders of several times the motor weight, with speeds of 1.7 mm/s by travelling waves generated at 6 V and 19.3 kHz. In this paper both travelling and standing wave motors are compared. By the optimization of various aspects of the device such as the vibrational modes, leg collocation and excitation signals, speeds as high as 35 mm/s, and payloads above 10 times the motor weight were demonstrated. The devices exhibited a promising positional resolution while actuated with only a few sinusoidal cycles in an open-loop configuration. Discrete steps as low as 70 nm were measured in the conveyance of 2-mg sliders.

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26

Palka, Ryszard, and Konrad Woronowicz. "Linear Induction Motors in Transportation Systems." Energies 14, no. 9 (April 29, 2021): 2549. http://dx.doi.org/10.3390/en14092549.

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This paper provides an overview of the Linear Transportation System (LTS) and focuses on the application of a Linear Induction Motor (LIM) as a major constituent of LTS propulsion. Due to their physical characteristics, linear induction motors introduce many physical phenomena and design constraints that do not occur in the application of the rotary motor equivalent. The efficiency of the LIM is lower than that of the equivalent rotary machine, but, when the motors are compared as integrated constituents of the broader transportation system, the rotary motor’s efficiency advantage diminishes entirely. Against this background, several solutions to the problems still existing in the application of traction linear induction motors are presented based on the scientific research of the authors. Thus, solutions to the following problems are presented here: (a) development of new analytical solutions and finite element methods for LIM evaluation; (b) comparison between the analytical and numerical results, performed with commercial and self-developed software, showing an exceptionally good agreement; (c) self-developed LIM adaptive control methods; (d) LIM performance under voltage supply (non-symmetrical phase current values); (e) method for the power loss evaluation in the LIM reaction rail and the temperature rise prediction method of a traction LIM; and (f) discussion of the performance of the superconducting LIM. The addressed research topics have been chosen for their practical impact on the advancement of a LIM as the preferred urban transport propulsion motor.

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27

Solomin, Vladimir A., Andrei V. Solomin, and Anastasia A. Chekhova. "Starting forces of the traction linear induction motor with adjustable resistance of the short-circuited winding of the secondary element." Transportation Systems and Technology 7, no. 2 (July 1, 2021): 87–96. http://dx.doi.org/10.17816/transsyst20217287-96.

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Background: Development and research of linear traction drives for Maglev transport is an urgent task. Linear induction motors can be used as traction machines for advanced rolling stock. Aim: Study of the starting characteristics of an adjustable traction linear induction motor with variable resistance by a short-circuited winding of the secondary element. Methods: Theoretically, relations were obtained for calculating the traction starting forces of an adjustable linear induction motor with various designs of a short-circuited winding of the secondary element. Results: Based on the obtained ratios, the calculations of the starting traction forces of linear induction motors intended for use in promising modes of transport were performed. Conclusion: The results of calculating the starting traction forces of adjustable linear induction motors make it possible to reasonably select the modes of starting the motor depending on the design of the secondary winding.

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28

Gao, Wei, Katsutoshi Horie, Songyi Dian, Kei Katakura, and Satoshi Kiyono. "Improvement in a Surface Motor-Driven Planar Motion Stage." Journal of Robotics and Mechatronics 18, no. 6 (December 20, 2006): 808–15. http://dx.doi.org/10.20965/jrm.2006.p0808.

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We report a surface motor-driven planar motion stage with an XYθZsurface encoder. The surface motor consists of two pairs of linear motors. Magnetic arrays are installed on the platen and stator windings of linear motors on the stage base. The platen is moved in the X and Y directions by X and Y linear motors. It is rotated around the Z axis by moment generated by the X or Y linear motors. The surface encoder consists of two two-dimensional (2D) angle sensors and an angle grid with 2D sinusoidal surface waves. The angle grid is installed on the platen. Sensors onside make the stage compact. The surface encoder is improved for higher positioning accuracy. Measurement errors of the surface encoder using two detectors – a quadrant PD and 2D PSD – are determined by simulation. The surface motor for increasing stage speed is modified. We conducted experiments comparing the previous prototype stage (Prototype I) and the improved stage (Prototype II).

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29

INOMATA, Tadao. "Linear motor for mechanical component." Journal of the Japan Society for Precision Engineering 56, no. 2 (1990): 282–86. http://dx.doi.org/10.2493/jjspe.56.282.

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30

TAKASAKI, Masaya. "Surface Acoustic Wave Linear Motor." Journal of the Japan Society for Precision Engineering 82, no. 3 (2016): 239–42. http://dx.doi.org/10.2493/jjspe.82.239.

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31

Zhai, Baonian, Siak-Piang Lim, Kwok-Hong Lee, Shuxiang Dong, and Pin Lu. "A modified ultrasonic linear motor." Sensors and Actuators A: Physical 86, no. 3 (November 2000): 154–58. http://dx.doi.org/10.1016/s0924-4247(00)00439-8.

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32

Kim, Jaehwan, Hyang-Ki Kim, and Seung-Bok Choi. "A hybrid inchworm linear motor." Mechatronics 12, no. 4 (May 2002): 525–42. http://dx.doi.org/10.1016/s0957-4158(01)00016-2.

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33

IZUHARA, Shunsuke, and Tomoaki MASHIMO. "Miniature Hollow Linear Ultrasonic Motor." Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2020 (2020): 2P1—I04. http://dx.doi.org/10.1299/jsmermd.2020.2p1-i04.

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34

UCHIDA, Hiroyuki, and Masatoyo SOGABE. "Linear Motor in Precision Engneering." Journal of the Japan Society for Precision Engineering 75, no. 2 (2009): 242–45. http://dx.doi.org/10.2493/jjspe.75.242.

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35

Chang, Chi-Shen, Tzong-Shi Liu, and Shir-Kuan Lin. "Design a linear motor absorber." Journal of Applied Physics 99, no. 8 (April 15, 2006): 08R323. http://dx.doi.org/10.1063/1.2176893.

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36

Bang, Young-bong, and Kyung-min Lee. "Linear motor for ejector mechanism." International Journal of Advanced Manufacturing Technology 24, no. 7-8 (May 5, 2004): 582–89. http://dx.doi.org/10.1007/s00170-003-1666-2.

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37

Luan, Zhong Quan, Hu Yan Ji, and Qing Dong Yang. "Research and Development of a Test Platform for Synthetic Performance Parameters of Linear Motors." Advanced Materials Research 383-390 (November 2011): 4486–91. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.4486.

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Linear Motors have been used more and more widely in high precision and high-speed linear motion for CNC machine tools, but uniform testing standards and methods for linear motor performance have not been established in China. Based on the virtual instrument software platform by means of computer technology, research and development of the test platform for synthetic performance parameters of linear motors can realize the rapid and accurate measurement, automatic storage and processing of linear-motor output, currents, positions, temperatures and other performance parameters. , Meanwhile, the platform can also provide the technical direction for design or improvement of linear motors, and technically support the formulation of related standards. Experiments showed that the test platform for synthetic performance parameters of linear motors can achieve high precision and automatic measurement to meet the testing requirements for synthetic performance of linear motors.

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38

Solomin, Vladimir A., Andrej V. Solomin, Larisa L. Zamshina, and Nadejda A. Trubitsina. "Determination of the axial force of a cylindrical linear induction motor with rotational-translational movement of the secondary element." Modern Transportation Systems and Technologies 8, no. 1 (January 15, 2022): 50–66. http://dx.doi.org/10.17816/transsyst20228150-66.

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Background: the variety of modern electric drives requires the creation of new types of electric motors with enhanced functionality. Cylindrical linear induction motors with rotational-translational movement of secondary elements also belong to such electric machines. Aim: development of a cylindrical linear induction motor with rotational-translational movement of the secondary element. Materials and methods: the use of a discrete inductor system for the implementation of the rotational-translational movement of the secondary element, the analytical solution of the field problem. Results: new design of a cylindrical linear induction motor with rotational-translational movement of the secondary element, the ratio for determining the axial force of the motor. Conclusion: the proposed design of a cylindrical linear induction motor has extended functionality due to the simultaneous implementation of the rotational-translational movement of the secondary element.

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39

Liu, Wei Hua, Yin Wang, Wei Qing Huang, and Qing Jun Ding. "A Linear Stepping Piezoelectric Motor Using Inertial Impact Driving." Applied Mechanics and Materials 226-228 (November 2012): 693–96. http://dx.doi.org/10.4028/www.scientific.net/amm.226-228.693.

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With the rapid development of modern precision manufacturing industry,actuators with high resolution and long stroke are needed in many application fields. Linear piezoelectric motors adopting inertial impact driving mechanism has been driving the interests of many researchers for simple structure and compact size. To increase the efficiency of this type of stepping linear motor, a motor using two piezoelectric stacks was proposed in this work. Two piezoelectric stacks were placed in vertical and were pre-tightened by an elastic thin plate. Support for the stator was designed. Operation principle of this motor was analyzed. To validate this operation principle, a prototype was fabricated and testing on this prototype was conduct too. By applying saw wave voltage signal to piezoelectric stacked in this prototype, the stator of the motor is able to push its mover move with pace length of 2 micrometer.

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40

Chen, Xifu, Qian Lu, Weiqing Huang, and Yin Wang. "Working Mechanism of Nonresonance Friction in Driving Linear Piezoelectric Motors with Rigid Shaking Beam." Mathematical Problems in Engineering 2018 (November 28, 2018): 1–10. http://dx.doi.org/10.1155/2018/7438167.

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A kind of nonresonance shaking beam motors is proposed with the advantages of simple structure, easy processing, and low cost due to its wide application prospects in precision positioning technology and precision instruments. The normal vibration model between the stator and slider is divided into contact and noncontact types to investigate the nonresonance friction drive principle for this motor. The microscopic kinematics model for stator protruding section and the interface friction model for motor systems during both operating stages are established. Accordingly, the trajectory of the stator protruding section consists of two different elliptical motions, which differ from those of resonance-type motors. The output characteristic of the nonresonance shaking beam motor is proposed under steady working conditions with reference to the research method of standing-wave-type ultrasonic motors. Numerical analysis is used to simulate the normal vibration and mechanical output characteristics of the motor. Experimental and theoretical data fitting validates the numerical analysis results and allows the future optimization of nonresonance-type motors.

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Zhao, Fei, Yunshuai Jiang, Kuang Yang, Chengming Zhang, Wei Lian, and Guangyin Wang. "Comparison Study on High Force Density Linear Motors for Compressor Application." Energies 14, no. 21 (November 8, 2021): 7417. http://dx.doi.org/10.3390/en14217417.

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This paper presents the modular topologies of the dual-stator dual-winding permanent magnet (PM) linear motors for linear compressors used in the electrified transportation application. Compared to the conventional PM linear motor in compressor, the proposed modular model is designed with the same volume but a higher thrust force density and a further higher air pressure in air cylinder, which are competitive in the compressor industry. The proposed compact PM linear motors are constructed with tubular windings in both inner and outer stators, as well as the ring-type magnet in mover. Simulation results of motor characteristics are compared by three-dimensional finite element method (3D FEM). Finally, the prototypes of the proposed PM linear motors are manufactured and tested for the linear compressor application.

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Tseng, Wan-Tsun, Chen-Nan Kuo, and Li-Iau Su. "OPTIMIZING DESIGN PARAMETERS OF A NOVEL PM TRANSVERSE FLUX LINEAR MOTOR." Transactions of the Canadian Society for Mechanical Engineering 39, no. 3 (September 2015): 443–54. http://dx.doi.org/10.1139/tcsme-2015-0033.

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In permanent magnet (PM) linear motors, the maximal thrust and the minimal cogging force are the most important goals to pursue. Design parameters of a PM linear motor such as translator pole pitch, magnet pole pitch, tooth width of the core, and magnet dimension can affect the thrust and the cogging force. In this paper, the relevant design parameters of the proposed linear motor are adjusted for the optimized performance of the machine. In order to obtain the optimal design parameters for achieving larger thrust and less cogging force, Taguchi’s method and grey system theory are adopted on the PM excited linear synchronous motor. From calculation of the signal-to-noise (S/N) ratio, the analysis of variance (ANOVA) and grey relational analysis, essential design parameters of the proposed linear motor can be found. These parameters are finally examined by using a finite element method (FEM) for 2D linear motor model simulations to corroborate the optimization results.

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Mracek, Maik, Tobias Hemsel, Piotr Vasiljev, and Jörg Wallaschek. "Self Configuration of a Novel Miniature Ultrasonic Linear Motor." Solid State Phenomena 113 (June 2006): 167–72. http://dx.doi.org/10.4028/www.scientific.net/ssp.113.167.

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Rotary ultrasonic motors have found broad industrial application in camera lens drives and other systems. Linear ultrasonic motors in contrast have only found limited applications. The main reason for the limited range of application of these very attractive devices seems to be their small force and power range. Attempts to build linear ultrasonic motors for high forces and high power applications have not been truly successful yet. To achieve drives, larger force and higher power, and multiple miniaturized motors can be combined. This approach, however, is not as simple as it appears at first glance. The electromechanical behavior of individual motors differs slightly due to manufacturing and assembly tolerances. Individual motor characteristics are strongly dependent on the driving parameters (frequency, voltage, temperature, pre-stress, etc.) and the driven load and the collective behavior of the swarm of motors is not just the linear superposition of the individual drive’s forces.

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Zhao, Hong Sheng, and Yun Zhen Wu. "A New Roller Conveyor Driven by Linear Motor." Advanced Materials Research 201-203 (February 2011): 1517–20. http://dx.doi.org/10.4028/www.scientific.net/amr.201-203.1517.

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To solve technical problems of current roller conveyor, such as big volume, complex structure and heavy maintenance workload, a new roller conveyor has been researched by adopting advanced technology of three-phase A.C linear motor. It has no intermediate transmission units that exist in the conventional roller conveyor, and is a new form structure of the conveyor. The device consists mainly of rollers and linear motors. The roller serves as driving and load-bearing mechanism, and as the rotor of linear motor, too. In the process of operation, with rollers served as the carriers, the friction force between rollers and objects transmits the motion consummately to achieve the goal of transportation. This new conveyor can completely replace the current various types of roller conveyor with such features as simple structure, low failure rate and cost.

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Wu, Yao Hui, Xiao Mei Liu, and Cheng Fang Ji. "Research on the Temperature Field of Special Linear Motor." Applied Mechanics and Materials 416-417 (September 2013): 169–74. http://dx.doi.org/10.4028/www.scientific.net/amm.416-417.169.

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To the problem of Linear motors temperature rise , and according to the basic theory of heat transfer, the heat conduction model of stator slot was established, the thermal conductivity of stator slot and the convection coefficient between the stator and rotor were determined .Based on this , the simulation model of motor transient temperature field operating at the polymorphism was established by using the finite element analysis software such as MagNet and ThemNet. Then the temperature field of the linear motor that work under the long-trem and periodic duty was calculated. Through the contrast and analysis between the simulation results and experimental data, the rationality of the simulation model and the correctness of calculation method were verified, which has effective help to design, manufacture and apply such kinds of special linear motor.

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Li, Tao, Yan Hong Chen, Jan Ma, and F. Y. C. Boey. "Metal-PZT Composite Piezoelectric Transducers and Ultrasonic Motors." Key Engineering Materials 334-335 (March 2007): 1073–76. http://dx.doi.org/10.4028/www.scientific.net/kem.334-335.1073.

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Rotary and linear ultrasonic motors were developed in the present paper using metal-PZT composite piezoelectric stator transducer configuration. The transducer consists of a concentric PZT tube and a metal tube, which structurally improve the reliability of the stator transducer. The developed transducer can provide a free vibration velocity of 0.9 m/s under 100 Vp-p at the resonant state. The rotary motor and linear motor use the developed transducer as the driving component, which produces the rotational motion to drive the motor. The rotary motor is able to achieve about 700 rpm no-load speed, above 2 mNm torque, maximum 70 mW output power and 50% efficiency under driving voltage of 80 Vp-p. The linear motor produces rotational motion and linear motion simultaneously. The linear speed of 5 mm/s can be achieved under the driving voltage of 50 Vp-p under no-load state. Under the loaded state, maximum 8 N load has been observed to be moved by the motor at a speed of 0.6 m/s. The maximum output power and efficiency of the linear motor are 9 mW and 11%, respectively.

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Luo, Lei, and Qian Luo. "Modal Analysis on Linear Ultrasonic Motor." Applied Mechanics and Materials 742 (March 2015): 522–24. http://dx.doi.org/10.4028/www.scientific.net/amm.742.522.

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As the expanding applications of linear ultrasonic motor, the demand for high-thrust linear ultrasonic motor in the aerospace and industrial robots is growing. Consequently, for a high-thrust linear motor, it’s stator model was established according to the actual structure of the motor stator and was also analyzed of the motor stator modal by the finite element method. The results show that the inherent frequency of vibration for the motor stator increases with the order, and corresponds with the vibration mode, by which was realized to work for the linear ultrasonic motor.

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Mizuno, Tsutomu, Shigeru Yamamoto, and Hajime Yamada. "Kinetic Behavior of Linear Motion Bearings Applied Linear Motor." IEEJ Transactions on Industry Applications 113, no. 1 (1993): 96–102. http://dx.doi.org/10.1541/ieejias.113.96.

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Sanada, Masayuki, Toshiharu Yokota, Shigeo Morimoto, and Yoji Takeda. "Operation Condition for Linear Compressor using Linear Pulse Motor." IEEJ Transactions on Industry Applications 120, no. 4 (2000): 520–25. http://dx.doi.org/10.1541/ieejias.120.520.

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Rafael Fernandes Neto, Tobias, and Ricardo Silva Thé Pontes. "Design Of An Elevator Prototype Propelled By A Linear Induction Motor." Eletrônica de Potência 14, no. 3 (August 1, 2009): 181–87. http://dx.doi.org/10.18618/rep.2009.3.181187.

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